Analyst Day Presentation March 2018 1 © 2018 Ambarella Inc. CONFIDENTIAL Forward-Looking Statements This presentation contains forward-looking statements that are subject to many risks and uncertainties. All statements made during this presentation other than statements of historical facts are forward-looking statements, including, without limitation, statements regarding Ambarella’s strategy, future operations, financial position, financial targets, future revenues, projected costs, prospects, plans and objectives for future operations, future product introductions, the future rate of our revenue growth, the size of markets addressed by the company's solutions and the growth rate of those markets, our ability to address market and customer demands and to timely develop new or enhanced solutions to meet those demands, our ability to retain and expand our customer relationships. In some cases, you can identify forward-looking statements by terms such as "may," "will," "should," "could," "would," "expects," "plans," "anticipates," "believes," "estimates," "projects," "predicts," "potential," or the negative of those terms, and similar expressions and comparable terminology intended to identify forward-looking statements. We have based these forward-looking statements largely on our estimates of our financial results and our current expectations and projections about future events and financial trends that we believe may affect our financial condition, results of operations, business strategy, short term and long-term business operations and objectives, and financial needs as of the date of this presentation. Although the forward-looking statements contained in this presentation are based upon information available at the time the statements are made and reflect management’s good faith beliefs, forward-looking statements inherently involve known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to differ materially from anticipated future results. Important factors that could cause actual results to differ materially from expectations are disclosed in the Ambarella's annual reports on Form 10-K and quarterly reports and Form 10-Q filed with the Securities and Exchange Commission (the “SEC”), particularly in the sections titled “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” You should not place undue reliance on these forward- looking statements, which speak only as of the date hereof. We do not undertake to update or revise any forward-looking statements after they are made, whether as a result of new information, future events, or otherwise, except as required by applicable law. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this presentation may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward- looking statements. Before you invest, you should read the annual and quarterly reports and other documents Ambarella has filed with the SEC for more complete information about the company and its ordinary shares. Additional information will also be set forth in Ambarella's future quarterly and annual reports and other filings made with the SEC from time to time. You may access these documents for free by visiting EDGAR on the SEC web site at www.sec.gov. © 2018 Ambarella Inc. CONFIDENTIAL 2 Today’s Presenters Fermi Wang, CEO Fermi Wang is a seasoned leader, a serial entrepreneur, and a video compression technology expert. He holds several digital video- related patents, including one of MPEGLA's core MPEG-2 and MPEG-4/AVC patents. Prior to Ambarella, Wang was CEO and co-founder of Afara Websystems, which pioneered server throughput computing. Afara was acquired by Sun Microsystems in July 2002. Afara's multi-core, multi-thread CPU is the critical technology in Sun’s UltraSPARC roadmap. Before founding Afara, Wang served in senior engineering and business management roles at C-Cube Microsystems. Wang's team was responsible for developing the world’s first MPEG CODEC chip. Les Kohn, CTO Les Kohn is well regarded in Silicon Valley as one of the leading chip architects in the industry. Prior to Ambarella, Kohn was CTO and co-founder at Afara. After Afara was acquired by Sun, Kohn became a fellow at Sun and continued to develop Afara’s throughput computing technology that would become the primary focus of Sun's UltraSPARC roadmap. Kohn was also chief architect at C-Cube, where he led the development of three generations of digital video CODECs, including the first single-chip MPEG-2 and HD/multi-stream CODECs. Prior to C-Cube, Kohn was a distinguished engineer at Sun where he was the chief architect of UltraSPARC I and II, Sun's first 64-bit microprocessors. Before Sun, Kohn was chief architect of the Intel i860 and co-architected the National 32000 microprocessor family. Dr. Alberto Broggi, GM, Ambarella, Italy Dr. Alberto Broggi is the founder of VisLab , General Manager of Ambarella Italy, and a professor of computer engineering at the University of Parma in Italy. Widely considered as a leading pioneer in the use of machine vision for automotive applications, Dr. Broggi has been actively engaged in autonomous driving research and development for over twenty-five years. He was most recently honored with the IEEE Medal for Environmental and Safety Technologies “for leadership in vehicular environmental perception, and for setting worldwide milestones in safe and reliable intelligent vehicles” on May 25, 2017. Chris Day, VP Marketing and Business Development Prior to joining Ambarella, Chris Day was President and CEO of Mobilygen, which was acquired by Maxim Integrated Products. Before Mobilygen, Day was general manager of media processing at NXP (formerly Philips Semiconductor), where he led TriMedia DSP efforts into video-over-IP, automotive, security, and display markets. Day has also held senior sales and marketing positions at C-Cube, AuraVision, Motorola, and Hitachi. © 2018 Ambarella Inc. CONFIDENTIAL 3 2018 Analyst Day Agenda • 8:30 Introduction George • 8:45 Strategic Overview: Computer Vision Fermi • 9:15 Technical Review: Computer Vision & Les Automotive • 10:00 EVA description Alberto • 10:20 Car Demo start • 10:30 Autonomous Development History Alberto • 11:00 Market Overview Chris • 11:20 Q & A Session © 2018 Ambarella Inc. CONFIDENTIAL 4 Today’s Presenters Fermi Wang, CEO Fermi Wang is a seasoned leader, a serial entrepreneur, and a video compression technology expert. He holds several digital video- related patents, including one of MPEGLA's core MPEG-2 and MPEG-4/AVC patents. Prior to Ambarella, Wang was CEO and co-founder of Afara Websystems, which pioneered server throughput computing. Afara was acquired by Sun Microsystems in July 2002. Afara's multi-core, multi-thread CPU is the critical technology in Sun’s UltraSPARC roadmap. Before founding Afara, Wang served in senior engineering and business management roles at C-Cube Microsystems. Wang's team was responsible for developing the world’s first MPEG CODEC chip. Les Kohn, CTO Les Kohn is well regarded in Silicon Valley as one of the leading chip architects in the industry. Prior to Ambarella, Kohn was CTO and co-founder at Afara. After Afara was acquired by Sun, Kohn became a fellow at Sun and continued to develop Afara’s throughput computing technology that would become the primary focus of Sun's UltraSPARC roadmap. Kohn was also chief architect at C-Cube, where he led the development of three generations of digital video CODECs, including the first single-chip MPEG-2 and HD/multi-stream CODECs. Prior to C-Cube, Kohn was a distinguished engineer at Sun where he was the chief architect of UltraSPARC I and II, Sun's first 64-bit microprocessors. Before Sun, Kohn was chief architect of the Intel i860 and co-architected the National 32000 microprocessor family. Dr. Alberto Broggi, GM, Ambarella, Italy Dr. Alberto Broggi is the founder of VisLab , General Manager of Ambarella Italy, and a professor of computer engineering at the University of Parma in Italy. Widely considered as a leading pioneer in the use of machine vision for automotive applications, Dr. Broggi has been actively engaged in autonomous driving research and development for over twenty-five years. He was most recently honored with the IEEE Medal for Environmental and Safety Technologies “for leadership in vehicular environmental perception, and for setting worldwide milestones in safe and reliable intelligent vehicles” on May 25, 2017. Chris Day, VP Marketing and Business Development Prior to joining Ambarella, Chris Day was President and CEO of Mobilygen, which was acquired by Maxim Integrated Products. Before Mobilygen, Day was general manager of media processing at NXP (formerly Philips Semiconductor), where he led TriMedia DSP efforts into video-over-IP, automotive, security, and display markets. Day has also held senior sales and marketing positions at C-Cube, AuraVision, Motorola, and Hitachi. © 2018 Ambarella Inc. CONFIDENTIAL 5 Ambarella Overview ($MM) High-Growth, Profitable Company Diverse End Market Exposure GoPro Revenue FY12-FY18 (excl. GoPro) CAGR: 21% Broadcast Other Non-GoPro Others Wear. Revenue $316 $310 VR Automotive $295 OEM Aftermarket $37 $96 $75 Sports (excl. $218 GoPro) $158 $84 $295FY18 Sports $295MM $121 $53 $258 $235 (GoPro) $97 $28 $220 Prof $14 Security $135 $104 Drone $83 $93 Non- Cons. GAAP FY12 FY13 FY14 FY15 FY16 FY17 FY18 Security EBIT Margin 15% 21% 23% 31% 37% 35% 28% Excl. GoPro, revenue grew 7% in FY17 and 10% in FY18 Note: Ambarella fiscal year ends January 31st. © 2018 Ambarella Inc.